If your looking for an inverter that really means business, these people manufacture ones that not only get the job done, but do it with ease and I find very efficiently on the batteries powering it. I run a 1500W Pure Sign wave, and it has performed flawlessly in the 2 1/2 years I have owned it. The only tiny little hiccup, the remote switch decided after about 14 months of pretty constant use it wanted to have a rest. I called to ask advice, they were horrified it had let go and 4 days later I had a new one in my hand, totally free of charge! To say these people are a pleasure to do business with would be a gross understatement!